A: A blood moon is a deep reddening of the moon caused by the Earth passing between the moon and the sun. During the period of the eclipse, light from the sun... Full Answer >
Sometimes, bones are the only accessible source of DNA, thanks to their structure, which preserves DNA comparatively well and for a long time. The main problems of DNA extraction from bones are DNA degradation due to environmental factors and the presence of soil-derived inhibitors like humus acids [1â10].
A 400,000-year-old mitochondrial genome adds new twists to scientistsâ picture of early human evolution. By Ed Yong | December 4, 2013. Femur from Sima de los Huesos Sima de los Huesos, a cave in northern Spain, contains one of the largest collections of hominin fossils ever discovered. Now, this so-called âpit of bonesâ has also yielded the oldest hominin DNA ever sequenced.